So, this page was released in September 2009, right before the third season of TBBT was being aired.
It was started as a fan project - and still is - providing a list of naming the images shown in the intro
of the TV series TBBT while the Barenaked Ladies sing "History Of Everything".
A lot of people have helped to make the list almost complete. See all the thank you notes (as well as the
previous update messages) at the bottom of the page.
My comment page on
my blog is still valid, so if you'd like to contribute,
please
drop me an email or go to the blog page. Also, refer to bottom of the website for the changelog.

The image most likely shows cave drawings of the African San culture.
The also called Bushmen or Basarwa documented their lives via rock drawings in the area of the Drakensberg Moutains.
See here for a large picture and here for a very interesting comparison of cave drawing characteristics throughout the world.

According to various sources, these more than 500 statues were carved between the first and 14th century. See the single statue here and here.
Thanks to Juan Fonseca for his photo of the single statue used in the frame.

New findings say it might be dancing Shiva (see this image); without final confirmation, though.

I guess it's not easy to determine which aspect (or the sort) of Kali the image represents. Can anyone find out where the carving is located?
It's also on the cover of the book Cuss!: The Ancient And Transcendental Art Of Hangin' Out - does anyone own this book and can checkout the details about the cover?

For some reason only close-ups of this mosaic can be found . But considering blogs and photoalbums (e.g. this one) it is most likely located at the Wat Phrathat Doi Suthep temple in Chiang Mai Province, Thailand.
In case anyone has a larger scene of the location, please share.

It is an illustration from "Myths of the Hindus and Buddhists" by Sister Nivedita and Ananda Coomaraswamy, probably originally painted by Abanindranath Tagore. I'm not quite sure who did what; information from bridgeman Art
Also used in one copy of Hermann Hesse's Siddharta (page bottom right, cover)
So I guess we can confirm, that it is not Saraswati.

Yes, it's Moses!
Throughout the history of the website this snapshot has been one of the most frequently discussed ones - whether it's Zeus (Jupiter) or Moses. Also we can find various sources in the web stating all of them.

Finally. Kathrin found prove that it's Moses, a statue in the village of Santa Maria del Monte. The statue was built in 1831 (according to this website) at the Sacro Monte of Varese with the Via del Rosario; another picture can be found here.

See this image which tells us that it's the Spaniard Vasco Núñez de Balboa (and not Francisco Pizarro). This image could be portraying when he reached the Pacific Ocean.
As suggested, the top icon on the banner is Virgin Mary and Baby Jesus, the bottom icon an emblem of the Spanish King, see here.

See here for a wider shot.
The glasses probably belonged to Benjamin Franklin (according to Tiago's speculation), as he was the only one amongst the men who signed the Declaration who was frequently seen wearing glasses; also he invented bi-focal glasses.

The Leader building in Regina, Saskatchewan, Canada housed the first newspaper in Regina (which still exists as "Regina Leader-Post" today).
According to the Libary and Archives Canada
the picture was taken in 1885 by Otto B. Buell.
Corey, who did a school project 17 years ago, can share this great detailed information with us: "The formally attired man in the top hat in front of the building is Nicholas Flood Davin, the founder of the paper."

Wow, it took us a while to find this, didn't it? This is J. Edward Simmons, President of the New York Stock Exchange in 1885.
See here and even Amazon has a print!
And now the machine has been solved: it's an Edison Stock Ticker (see here)

Not the exact same shot, but I think it's the same waggon: according to this source (and this one) the women were promoting prohibition during a parade in Hawkinsville, Pulaski County, Georgia in 1915.

Even though these people are smiling, sources indicate that they had been victims of German bombing raids in Great Britain.
It is not entirely clear, where the picture was taken: this website claims it was in Liverpool in 1941, the BBC says it was in Belfast. Also used on this website dealing with Carrie's War by Nina Bawden.

Laurie suggested it might rather be Flappers than Suffraguettes: "It is possible that the picture could be of Suffrogettes rather than Flappers, since the 19th Amendment was not ratified until 1920, but as the women appear to be smoking and some of them are dressed like men, I'm leaning towards Flappers."

This picture (and here, sold here) also supports that statement as it labels the women as Flappers. So I guess they are flappers!.

For time issues, I'll just put Doublas' comment here:Number 73 isn't a Polikarpov (russian aircraft) but a Boeing P-12. Observe the rudder painted with the colors of the United States Army Air Corps (check other examples in http://en.wikipedia.org/wiki/United_States_Army_Air_Corps).
Regarding denomination F4B-4, this was a Navy version of the P-12, but in this case it would have split axle landing gear (i.e. http://en.wikipedia.org/wiki/File:Boeing_F4B_VF5.jpg).
In short, it's a P-12 :)

Two people confirmed this, one commenting as follows:"Hawker Hurricane Mk I´s flying in the early WWII 'vic-formation' (three aircraft/flight, very close formation flying).
The roundels and fin flashes are clearly early war british markings.
[...] that photograph was taken in the early stages of the battle of britain, summer 1940."

Chris says the picture was taken a few months later:"Those that say the formation of fighters are British Hurricanes are corrects
however the picture was taken at the end of the Battle of Britain over the skies
of Yorkshire in September/October 1940. They belong to 85 squadron who moved north
in September 1940 and prior to switching to night fighter operations the squadron was
reequipped with new fighters and pilots and practised formation flying even though such
tight vic formation had been abandoned as a fighting tactic by the RAF during BoB."

"Residential Lawn Maintanance" in Plant City, Florida has this picture in the gallery.
I have tried to check out the complete area of Plant City via GoogleEarth but I couldn't find that street. Can anyone else?

Can be found here.
This book suggests it's the Columbia, but if you look at this Wikipedia image, you can see much more black on the front part of the wings of the Columbia.
However, this picture from NASA supposedly shows the same launch (the intro's shot being inverted), stating that it is the Challenger (OV-099) taking off on April 6, 1984 for its mission STS-41-C.

Yonge-University-Spadina line heading towards Downsview stopping at Union Station.
Andrew found this picture and this one, where and the walls, floor, ceiling and lighting match.
Also found at hotstop.

Does anybody have the urge/time to check out all the lights in Hollywood and tell me which intersection this is ;)? C'mon, show some enthusiasm just like Raj and Howard searching for the house of America's Next Top Model :).
A bigger shot is here and this is probably the same one.

I guess just about everybody who has seen more than one episode
of The Big Bang Theory has
felt the urge to watch the intro in slow motion to figure out all the details about the
images that are flashing in a fraction of a second.
After the second season has been aired for a while now and I finally made room for it in
my time schedule,
I split up the intro frame by frame and used one snapshot per theme. Even though some of
the themes are pretty obvious, others are quite tricky and I had no choice but to take a
good guess or leave it blank. So if anybody disagrees with what I put as description or can
fill in the blanks, just
drop me a line
and I will try to improve the content. You can also comment in my
blog post.
At this point in time, this page is depending on community input anyway - so please share
your knowledge about the screenshots and I shall publish it with a thanking note :)
As you can read in the copyright column at the end of the page, this is just a fan project
without commercial affiliation.
You are very welcome to link to this website, but please do not hotlink the images! Otherwise I will have to use anti-hotlink measures :(

Update September 27th, 2013:

Completely solved 72 and 75. Additional discussion to 23.

Update June 27th, 2013:

Solved 29 and 68. Link to original image for 59, additional link for 92.

Update June 12th, 2013:

Additional information about the dates of 77.

Update December 5th, 2012:

80 could be Plant City, FL. 13 new image link.

Update August 30th, 2012:

71 are Flappers. Finally: 26 is Moses!

Update July 20th, 2012:

Dragon mosaic 24 most likely located at Wat Phrathat Doi Suthep in Thailand.

All screenshots and images of The Big Bang Theory show are copyright by
the producing company Warner Bros. and/or the broadcasting channel CBS.
This private website is just a fan project and not affiliated with Warner Bros.
or CBS, it is without commercial interest or any other purpose to make profit.